1166796720 has 60 divisors (see below), whose sum is σ = 3918494736. Its totient is φ = 311145600.

The previous prime is 1166796691. The next prime is 1166796727. The reversal of 1166796720 is 276976611.

It is a happy number.

1166796720 is digitally balanced in base 4, because in such base it contains all the possibile digits an equal number of times.

It is a tau number, because it is divible by the number of its divisors (60).

It is a super-2 number, since 2×1166796720² = 2722829171605516800, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is not an unprimeable number, because it can be changed into a prime (1166796727) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 809556 + ... + 810995.

Almost surely, 2^1166796720 is an apocalyptic number.

1166796720 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1166796720 is an abundant number, since it is smaller than the sum of its proper divisors (2751698016).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1166796720 is a wasteful number, since it uses less digits than its factorization.

1166796720 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1620570 (or 1620561 counting only the distinct ones).

The product of its (nonzero) digits is 190512, while the sum is 45.

The square root of 1166796720 is about 34158.4062860081. The cubic root of 1166796720 is about 1052.7657154712.

The spelling of 1166796720 in words is "one billion, one hundred sixty-six million, seven hundred ninety-six thousand, seven hundred twenty".